.loading {
  height: 100px;
  text-align: center;
  position: fixed;
  left: 40%;
  top: 50%;
  width: 20%;
  z-index: 11111;
}
.loading .overlay .fa-spin:before {
  color: #d9d9d9;
  font-size: 24px;
}
.loading .overlay .fa-spin {
  margin-right: 12px;
}
.loading .overlay {
  height: 100px;
  line-height: 100px;
  background: #fff;
  z-index: 10001;
  position: relative;
  border-radius: 15px;
}
.loading:before {
  content: "";
  z-index: 10000;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: 0.3;
  position: fixed;
  left: 0;
  top: 0;
}
